粒度测定（IUCLID 第 4.5 节）和尘埃含量（4.28.8）的信息是否需要由每个注册人单独报告，还是原则上需要联合提交信息的一部分？

粒度测定（IUCLID 第 4.5 节）和尘埃含量（4.28.8）的信息是否需要由每个注册人单独报告，还是原则上需要联合提交信息的一部分？

Is information on granulometry (IUCLID section 4.5) and dustiness (4.28.8) to be reported separately by each registrant, or is it part of the information to be submitted, in principle, jointly?

粒度和粉尘含量的信息要求是 REACH 附件 VII 的一部分。因此，相应的 IUCLID 第 4.5 节和 4.28.8 节原则上应由主注册人代表共同注册人提交。或者，每个注册人也可以通过选择退出机制分别提交这些信息。

The information requirements on granulometry and dustiness are part of REACH Annex VII. Therefore, the corresponding IUCLID sections 4.5 and 4.28.8 should in principle be submitted by the lead registrant on behalf of the co-registrants. Alternatively, this information can be submitted separately by each registrant via the opt-out mechanism.